Combination thermometer and hydrometer



FIG. 1 is a perspective view of my new and novel design;

FIG. 2 is a top view of my new and novel design;

FIG. 3 is a front view of my new and novel design;

FIG. 4 is a right view of my new and novel design; and,

FIG. 5 is a rear view of my new and novel design. 

The ornamental design for a combination thermometer and hydrometer, as shown. 